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JOSEPH HILL, 0E NEW YOEEN.' Y., AssGNoE 'ro E1MsELE,M.s.ERosT,

i l `AND E. P. HUYLEE, 0E SAME PLAGE.

LettersPatent No. 103,331, dated May 24, 1870.

Y IMPSOVEMENT In' @entame 4eliminieren The4 Schedule referred to inthese Lettexs Patent and making part o! the aange.

i lower portionof the plate or cylinder.

I obviatc this diicnlty by making the negative element in the form of anannular disk, A, figs. 1 and 2. This disk `is heldin a glass (or othersuitable mai terial) vessel, B,fig. 1, having an opening in the centerO. Mercury is then poured upon the disk till it is covered, and thewhole suspended in the top of a jar, D, by means oilead 4hangers a a,lig.1, so that t-hedisk wilibe lfuly immersed in the exciting Huid.

The horizontal position of the disk` insures an equal coating ot mercurytill thewbole of it is consumed.

The positive element is a disk, d, figs. 1 and 3, of copper-wire clothsecured to a spider vframe, e, .to in' sure stiffness, and rests on therim of the Yessel B.

4 Si. ieail shoulder, E, gs. 1 and 3, on the center oi the wire-clothdisk holds a rod with binding-screw f. ii/'hen a circuit is made betweenthe two elements,

a rapid evolution of' hydrogen takes place, the gas rising up throughthe meshesof the wire-cloth, and

generating a current from the center opening 0 toward the sides'of thejarycausing a continuous circli- `lation of thc fluid, and thus securing'a uniform and constant action till the battery is exhausted.

What I claim as my invention is' 1. Suspending horizontally the negativeplate in vor near the top of a jar or other vessel, under suchconditions as shall secure a full andequable coating oi' mercury andcirculation of' the fuids, substantially as herein described.

2. .The use of wire-cloth as the positive element in a gennaio-battery,substantially in the manner and for the p'urpose specified.

' JOSEPH HILL.

, Witnesses:

. HENRY M. PAINE, H. M. PIERsoN.`

